Hello, I exchanged currency on [original transaction date]. At the time, I [also selected a buyback arrangement / am unsure whether I selected one / did not select one]. I have [currency, denominations and number of banknotes] left. Please explain which original documents you need to check buyback eligibility, whether these banknotes qualify, and the applicable quantity limits, deadline and fees. If they do not qualify, please explain whether you can exchange them back as a regular transaction, the quotation you would use and the amount I would receive after charges. Please distinguish the two options. This is an enquiry only; I have not confirmed a transaction.